Teat-cup for milking-machines.



A. E. ANDERSON.

TEAT CUP FOR MILKING MACHINES.

APPLICATION FILED AUG.H, I916.

Patented Aug. 28, 1917.

VIII/Ill I Ill-Willi m uzn toi witneoom r UNITE S A E TT AUSTIN. n, ANDERSON, or nnivnoLrirnnw-ronx.

{BEAT-CUP FORTMILKING-MACHINEYS.

To'all whom it may conce n; a y I Be it knownjthat I, Aus'rm' E. ANDERsoN, a citizen of the *UnitedfStates,residing at Randolph, in the: countyv 0f Cattara'ugus and StateofNew'Yorkhave invented certain new 'an'duseful v Improvements in Tea t Cups for Milking-Machines, of whichthe following, takenf-inconnection with the accompanying drawings, is "a Specification.

The invention relates to'teat cups. for use 7 with milking "machines of the suction or Vacuum type shown inmy application for Letters Patent, Serial No. 87,24 8, and, particularly to cups which are providediat their upper, ends with means for forming an .air

. closure between the teat andthe upper rim ofsaid cup; and, the object of the invention is toretain a resilient disk inthe upper end of, the teat cup in such amanne'rfthat it will form an airtight joint between the surface of said disk and the inner wall of the teat cupfwithout the use of clamps 0r, rings. orv

' additional Ineans 'for holding said disk in position, to thereby form an air tight joint between the'teat and the body ofjthe teat cup andautomatically seal: said upper end atthis' point when placedon the teat; and the invention'consists in the novel features and combinations hereinafter set 1 forth and claimed. v f Inthe drawings, Figure l is an elevationof the teat cup withtube attachment at its lowerend; Fig.2 is a lengthwise sectional Q, contour; of the-same.

, I Like characters'of e I a. responding parts-in the several views.

View of the teat cup and tube showing the flexible 'diskin the proper sealing position" on the teat. Fig. 3 is a similar-sectional View ofthe upper portion of the teat cup without the teat inserted, showing the nor- 1 mal position and depending shape taken by the flexible disk when placed in the upper end of'the teat cup. Fi'gL-Ljis an elevation of the lower end of the teat cup without the tubular connection showing the preferred x Fig. 5:Yis a' plany-view off the flexible "disk removed from the, teat cup; aHdFig, 6 is T a diametral sectional view ofthe same.

The"numeral 10 designates the teat" cup which 'ispr'eferably made'of sheet metal in reference refer'to cor- I c This depending position shapes the resilithe form shown with the bead ll around its lower end 'to receive, the flexible tube 12,

preferably of; rubber, thereover in holding the air to said cup for the repetition of this milking operation, t

The body portion forms might be, usedwithout de'parting from my invention; it only being necessary to Patented Aug.'28', 19-17. T

'. ApplicationfiledAugust11,1916.,-Seria1No.114,368L} Q 6 k 18, the 'tea't cup 310 is.

preferably made in thefupwardly curving T and enlarging form 1 shown" though other have ,sufiicient, room within said body 'l3jfor.

teats 14, which are 'of differentsizes." r

The upper end of the teat cup 10 is shaped in an.ioutwardlyfcurved portion '15, which ends in an acute angle 16 and an intu'rned rigid flange portionl'l': which is preferably horizontal, the flange "17 formingthe annu lar acute'ang'lelb around ltheentire inner wall of the upper end of theteat cup 10. The flange 17 extends'inwardonlya short distance thereby providing an opening18 in the upper end for the insertion .of theteat 14: into the cup 10.

Y The sealing of the upper end of the 10. is 'a'ccomplishedby neans of'fa flexible disk 19- which is preferably made ofjpure sheetrubber and cut from the flat'sheetin the circularform vwith'an inner opening 20 to receive the teat ltfltherethrough as shown, in Fig; 2. The circumference of; the; flat I disk19 is diametrally larger than that within" the angle 16 in the upper end ojfthe teat p a cup 10 so that when said disk 19-is inserted Into the upper e'ndof theteat; cup H1O the periphery 21 of the disk 19 willgbe Wedging'ly forcedinto the angle 16 and dependingly inclined downward through thevcentr'al portion, as shown'in Fig. 3, so thatthe outeriwall 'ofjthe depending disk 19 is resiliently 1 forced against the inner wall of the curve 15 when in the normal'jposition assumed by the flexible disk1 1'9 withfits periphery confined within the "angle .16."-

ently flexiblediskil 'so astoconvenientlyreceive theend 22vof the teat :14 so thatas said flange, a resilient flexible disk havsoon as said lower end 22 is inserted into and closes the opening 20 in the center of the disk 19 the suction action will'begin to take effect and will draw the cup 10 onto the teat into the position shown in Fig. 2.

As the suction takesplace within the teat cup when it is in proper position on the teat there will be created an atmospheric pres: sure on the outside 01": the cup whichwill force the outer portion of the disk 19 downward and hold it tightly against the curved inner wall portion 15 and willthus cause the' 'without the use of complicating devices and especially -fors'ecuring the disk 19 in position, said disk 19 can be easily removed from the teat cup by'inserting the finger through the opening20 and pulling said disk 19 from the cup 10 and as easily returning it to .posi-.

tion in the wedge shaped angle 16, the resilience of the rubber wedgingly forcingthe periphery 21 into said angle 16 as hereinbe' "fore stated.

It is also obvious that the teat 14 can'be easily removed from the cup 10 as soon as the suctlon actlon is removed from said cup.

I claim as new:

1.v In combination with a teat cup, flex iblemeans disposed completely in the upper end of the teat cup andthrough which the teat extends, said teat cup shaped so that said flexible means will be pressed against the inner wall of the teat cup in sealing'en gagement by atmospheric pressure when suction takes place within said cup.

2; A teat cup for milking machines com prising a metallic teat cup to recelve the teat n the upper end thereof, an outward" and inward extending upper portion, said cup having to form an acute angle-therewithin, and a resilient flexible disk having a central hole therethrough'forthe teat for sealing therewith, the diameter of said disk largerthan the diameter of the inner wall at said acute angle'to confine said disk in'said angle with normal central dependence against said outward extending portion.

3. A teat cup for milking machines 'co1nrisin a 011 0"member haviris an inturned t) O flange on the upper end to form an angle with the 'out-turned'side of the cup adjacent ing a hole therethrough for the teat'ior seal ing therewith, said disk larger in diameter than the space within said angle adjacent said flange to seal the upper end of the cup by atmospheric pressure againstsaichoutturned wall of the cup when suction takes place within said cup.

4. A teat cup for milking machines comprising a metallic teat cup having an opening in the upper end to receive the teat therein, and comprising an outwardly curved upper portion on the upper end of said cup with a substantially horizontal inturned flange to form a retaining angle betweensaid flange and rved*porubn, a resilient flexible" sealing disk having a central hole therethrough ior the teat,fth'e dia1neter of said disk larger than the diameter of'the inner wall of said cup at said acute angle to confine saiddisk in said anglefwitlracen tral dependence upon saidcurved upper portion to be drawn thereagainst by suction from the lower end of the cup.

5. A teat'cup'for IIlllklIlg lfiitClllIlGS comprising a "cup member having an lnturned substantially horizontal flange'dfedge'on the upper end with a 'cen'tralop'ening 'to-fre: ceive the teat therethroughf, the sidefsflof the cup belowsai'd flange curved outwardly tO' fOI'lil an acute holding "angle with said flange, a flat rubber sealing disk havinga central opening therethrough for the teat, the diameter of said disk larger than the diameter of the space between the inner walls of said cup at said acute'angle to' con-Y fine'said disk in said anglewith acentral dependence on said'curved portion, 'said'cu'p' having a gradually diminishing lower p or tion with a head on the lower en'dof the same, and a flexibletube'on said lower end to create suction therethrough. V 6. In a teat cup,- acup member havinga flared outer end, perforateddiskseatedon said flared end, and means to secure the 'disk' to saidflared enchsaid disk having'its central -part' extended" inwardly beyond" the 1 ared end to form a vacuum junction with the flared end. I V I j 7 In a teat cup, a cup member, a perforated diskin the cup member, and vanin' j clined seat for the disk formed'soas to pro; vlde a vacuum spacebetween the under 'face of the dlskand seat so as to cause ftli'esurro-unding'air to press upon the upperffac'e of the dlsk to force the latter 'againstsaid' seat.

' 8. In a teat cup, a cup member flare'dfo utj wardly at its upper end and having its edge turned inwardly, and a'perforated disk 'hav-i ing its peripheral portion cla'mped'between said edge and the flared end ofthe'inember'.

space in con-' 9. In a teat'cup, a cupmembe'r having a seat and a flexible teat receiving eleme 'it' s'e cured on said seat, said SeateXtendingfinposed whereby upon formation of vacuum In testimony whereof. I have aifixed my signature in the presence of two WitDBSSQS.

AUSTIN E. ANDERSON.

Witnesses:

H. O. SANDBERG, P. M. SIMMONS."

below said element atmospheric pressure acting upon the upper" exposed part of said element will force said element into sealing engagement with the seat.

Copies of this petent may be obtained for five cents each, by addressing the0omm1ssi0ner of Iatents,

Washington, D. G." 

